Yarn-splicing machine



Patented Apr. 7, 1925.

UNITED STATES PA'IEN'Iv OFFICE.

FRANKLIN W. .'BBEWSTER, 0F CENTRAL FALLS, RHODE ISLAND, ASSIGNOR T0 MAN-'VILLE JENCKES COMPANY, 0F PAWTUCKET, RHODE ISLAND, A CORPORATION 0FRHODE ISLAND.

YARN-SPLICING MACHINE.

Application led May 27, 1922. Serial No. 564,142.

To aZZ 'whom it may cof/wem.'

Be it known that I, FRANKLIN'VV. BREW- sTER, a citizen of the UnitedStates, residing at 87 Hawes St., Central Falls, in the county ofProvidence and State of Rhode Island, have invented certain new anduseful Improvements in Yarn-Splicing Machines; and I do hereby declarethe following to be a full, clear, and exact descrip-tion of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

The invention relates to machines for splicing yarns which consist of anumber of strands twisted together' and its object is to facilitate andquicken the untwisting of the ends of the yarns to permit the strandsvto be separated and spliced and the subsequent retwisting o the splicedstrands.

` A machine embodying the preferred form of the invention is shown inthe aqcompanying drawings in which Fig. 1 is a plan view and Fig. 2 is afront elevation of the machine.

As shown the machine comprises two opposed twister-heads arranged inaxial alinement with each other and connected to be simultaneouslyrotated in opposite directions from a driving shaft which may beselectively driven in either direction through a clutchf'under thecontrol of the operator and arranged to be engaged with either one oftwo oppositely rotating driving pulleys. AEach or the twister headscomprises a spindle 2 which is mounted in bearings 4 formed on astandard secured to the base plate 8. yihe spindleand bearings areslotted to permit the .yarn to be passed laterally into the axis ofthespindle and at the inner end of each spindle the slot is closed to aless width than the'idiameter of the yarn, so that the yarn is vwedgedand caused to rotate with the spindle. Each spindle' is providedbetweenthe bearings 4 with a piniony 12 which is engaged' by a gear 14mounted in the standard 6 and provided at one side with a groovedlpulley 16. Each pulley is connected by a belt 18 with a puiley 20secured to a driving shaft 22 which is mounted be* low the base plate.One of the belts 18 is an opened and the other is a crossed belt so thatthe two opposed twist heads are simultaneously rotated in oppositedirections by the rotation of the shaft 22 in a. given direction. Theshaft 22 may be driven in either direction at the will of the operatorthrough a clutch 24 keyed to slide on and rotate with the shaft and heldnormally in mld position between'two driving pulleys 26 by springs 28.The clutch is provided on each s1de with a lug 30 adapted to cooperatewith the corresponding lug 32 on the op? ing posts 38 and plates 40which are forced against the post bythe leaf springs 42 and are providedwith inclined 'upper ends to permit the ready insertion of the yarn endin the clip. rlhe untwisted and separated strands of each yarn are heldpreparatory to the splicing by a series of tension plates 44 which aremounted on a rod 46 at the iront edge of the base plate 8 and arepressed together by a spring 48.

In splicing the ends of two yarns the operator may by manipulation ofthe gears 14 bring the slots in the spindles into register with theslots in Athe bearin s so that the ends of the yarns may be rea ilyintroduced into the spindles, the yarns first being threaded with thepigtail guides 50 at the outer ends of the spindles. The beltconnections between the gears 14 andthe driving shaft 22 permits eachgear and spindle to be rotated in locating the slots in the spindleswithout rotation of the shaft 22 or the other gear and spindle. Afterthe end of each yarn has been passed into the corresponding spindle itsfree end is introduced into the cooperating clip, the end of the yarnwhich passes through the right hand spindle being held by the left handclip while the end of the yarn which passes through the left handspindle is held by the right hand clip. After thus introduce ing theends of the two yarns into yithe twister heads and end holding clips theoperator shifts the clutch into engagementwith the pulley 26 which isrotating in the proper direction to drive the twister heads in adirection to untwist the length of yarn extending from the inner ends ofthe heads to the clips and then releases the lever so that it returns tonormal neutral position. The clutch need be held in engagement with thepulley but for an instant 1n order to rotate the heads suiiiciently tountwist the short lengths of thread between the heads and the holdingclips. The strands of the yarns having been thus quickly untwisted theoperator passes her fingers between the different strands andpasses'them down between different pairs of tension disks as indicatedat the left in Fig. l, the separated strands leading from the ends ofthe twister head about a vertical guide wire 52 arranged ncar the innerend of the head and in front of the yarn as it leads from the head tothe corresponding clamping clip. The operator also draws the strands ofthe other yarn in the same way over the other guide wire 52 andintroduces the ends of the strands between different pairs of disks 44in the other strand holder. Single strands are then removed from thestrand holder and spliced together between the twister heads by looselytwisting one strand about the other, the twisted portions in differentspliced strands being located at dir'- ferent points between the heads.The operator then shifts the clutch in the opposite direction and intoengagement with the oppositely rotating pulley, thus simultaneouslyrotating the opposed twister heads in a direction to twist together thespliced strands. The spliced strands are thus quickly retwisted and uponrelease of the clutch shifting lever the clutch returns to neutralposition so that the automatic rotation of the twister heads ceases. Theoperator then trims the waste ends and removes the spliced yarns fromthe twister heads, bringing the slots in the spindles into register withthe slots the bearings by manual manipulation of the gears 14 as before.

While it is preferred to employ the specic construction and arrangementof parts shown and described it will be understood that this notessential to the broader fea-- tures of the invention and may be variedor modified without departing therefrom.

What is claimed is: l

1. A yarn splicing machine having, in combination, two opposedlongitudinally slotted twister spindles each provided with a pinion, agear engaging each pinion and provided with a pulley, a driving shaftprovided with pulleys connected with the gear pulleys by open and crossbelts respectively, and mechanism under the control of the operator forselectively driving the shaft in opposite directions.

2. A yarn splicing machine having, in combination, two opposed twisterheads, a

shaft connected to simultaneously rotate the heads in oppositedirections, two oppositely rotating driving pulleys, a clutch forconnecting either pulley to the shaft, springs for holding the clutch inneutral position, and a lever within reach of the operator for shiftingthe clutch in either direction against the. force of the correspondingspring.

3. A yarn splicing machine having, in combination, two opposed twisterlongitudinally slotted spindles each provided with a pinion, a gearengaging each pinion and provided with a pulley, a driving shaftprovided with pulleys connected with the gear pulleys by open and crossbelts respectively, two oppositely rotating driving pulleys looselymounted on the shaft, a clutch be tween the pulleys for connectingeither pulley with the shaft, vsprings for normally holding the clutchin neutral position between the pulleys, and a manually operated leverfor shifting the clutch in either direction.

4. A yarn splicing machine having, in combination, a base plate, twoopposed twister heads mounted on the upper side of the plate in axialalinement with each other, a driving shaft mounted on the under side ofthe plate with its axis parallel to the axes of the heads, drivingconnections between the shaft and heads for simultaneously rotating theheads in opposite directions, and mechanism under the control of theoperator for selectively rotating the shaft in opposite directions.

5. A yarn splicing machine having, in combination, a base plate, twoopposed twister heads mounted on the upper side of the base plate andeach provided with a pinion, a gear engaging each pinion and providedwith a pulley, a driving shaft mounted on the vunder side of the baseplate with its axis parallel to the axes of the twister spindles,pulleys on the driving shaft connected with the gear pulleys by open andcross belts, respectively, and mechanism under the control of theoperator for selectively driving the shaft in opposite directions.

6. A yarn splicing machine having, in combination, two opposed twisterheads mounted in alinement with each other and rotatable in oppositedirections to untwist or re-twist yarn held thereby, and a series oftension plates mounted in front of the heads and pressed together by aspring to hold the individual .strands of untwisted yarn.

`FRANKLIN W. BREWSTER.

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